"After effective intervention by our military, the ship sailed to one of the Russian ports,” Tusk said in a post on X.
He added that the Polish navy’s ORP Heweliusz, a hydrographic survey vessel, was en route to the area.
Defence Minister Władysław Kosiniak-Kamysz said the incident occurred on Tuesday near a cable owned by Polish grid operator PSE.
The company said the cable remained operational, news agencies reported.
Kosiniak-Kamysz said a patrol flight was launched in response and that the vessel had been "effectively deterred."
A special meeting is scheduled for Thursday at the Maritime Operations Centre in the naval port of Gdynia, with Tusk expected to attend.
Meanwhile, the Kremlin said on Wednesday that Russia would defend its ships operating in the Baltic Sea using all means available, the Reuters news agency reported.
The statement came after a recent failed attempt by Estonia to seize a Russian-bound oil tanker believed to be part of the shadow fleet evading Western sanctions, according to Reuters.
Poland’s top soldier, Gen. Wiesław Kukuła, said last week that NATO would deploy additional naval assets in the Baltic Sea after Estonia forced a suspected Russian "shadow-fleet" tanker out of its waters and a Russian fighter briefly violated NATO airspace.
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Source: IAR, PAP, Reuters